Abstract
The popularization of personalized wearable devices has accelerated the development of flexible/stretchable supercapacitors (SCs) that possess remarkable features of miniaturization, high security, and easy integration to build an all-in-one integrated system, and realize the functions of comfortable, noninvasive and continuous health monitoring, motion records, and information acquisition, etc. This Review presents a brief phylogeny of flexible/stretchable SCs, represented by planar micro-supercapacitors (MSCs) and 1D fibrous SCs. The latest progress and advantages of different flexible/stretchable/self-healing substrate, solid-state electrolyte and electrode materials for the fabrication of wearable SCs devices are summarized. The various configurations used in planar MSCs and 1D fibrous SCs aiming at the improvement of performance are also discussed. In addition, from the viewpoint of practical value and large-scale production, a survey of integrated systems, from different types of SC powered wearable sensing (gas, pressure, tactile…) systems, wearable all-in-one systems (including energy harvest, storage, and functional groups), to device packaging is presented. Finally, the challenges and future perspectives of wearable SCs are also considered.
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